Class index table columns doxygen

Question

I am creating my code's documentation using Doxygen. The problem is, there are quite large number of classes and Doxygen generates a class index that is vertically as well as horizontally scroll able. I mean, there are a large number of columns in that HTML table. How do I change the number of columns to say 1 or 2 which will make the class index page only vertically scrollable?

Answer 1

See the alphabetical index configuration file options. Specifically, see the COLS_IN_ALPHA_INDEX option. From the doxygen manual:

If the alphabetical index is enabled ... then the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in which this list will be split (can be a number in the range [1..20])